1 files changed, 49 insertions, 0 deletions
diff --git a/src/hs-helper.cpp b/src/hs-helper.cpp
index 50a3ae1..159668e 100644
--- a/src/hs-helper.cpp
+++ b/src/hs-helper.cpp
@@ -17,6 +17,7 @@
 #include <string.h>
 #include <cstdarg>
 #include "hs-helper.h"
+#include <unistd.h>
 
 
 const char* evlist[] = {
@@ -272,3 +273,51 @@ std::string get_application_id(const afb_req_t request)
 
     return appid;
 }
+
+/**
+ * read json file
+ *
+ * #### Parameters
+ * - file : file name
+ * - obj : json_object
+ *
+ * #### Return
+ * 0 : read success
+ * 1 : read fail
+ *
+ */
+int readJsonFile(const char* file, struct json_object **obj)
+{
+    *obj = nullptr;
+    int ret = -1;
+    FILE *fp = fopen(file, "rb");
+    if(fp == nullptr) {
+        AFB_ERROR("open %s failed", file);
+        return ret;
+    }
+
+    const int buf_size = 128;
+    char buf[buf_size];
+    struct json_tokener *tokener = json_tokener_new();
+    enum json_tokener_error json_error;
+    while(1) {
+        size_t len = fread(buf, sizeof(char), buf_size, fp);
+        *obj = json_tokener_parse_ex(tokener, buf, len);
+        if(nullptr != *obj) {
+            AFB_NOTICE("read %s success", file);
+            ret = 0;
+            break;
+        }
+
+        json_error = json_tokener_get_error(tokener);
+        if ((json_tokener_continue != json_error) || (buf_size > len)) {
+            AFB_ERROR("parse %s error", file);
+            *obj = nullptr;
+            break;
+        }
+	}
+
+	fclose(fp);
+	json_tokener_free(tokener);
+	return ret;
+}